building false floor box, need air space requirements for sub Options

[Cormudgen]

I am about to undergo building a custom false floor box for my 6th gen hatchback. The sub I am using is a 12" JL w0. I currently have the sub in a factory box it came with from JL. What i would like to do is build a false floor where the actual box is submerged in the spare wheel well. It is about 4" deep. If i could submerge it 4" in the well and only have to build the false floor 2" up I wouldnt lose that much space. That would be ideal cause then I could use 2"x4" to support the false floor and not have to do nearly as much cutting. What I'm wanting to know is how much air space this sub needs and where I can find the info. Also, when building the box part, after screwing in the pieces together should I use some type of caulk as well? and do I need to carpet the whole box, currently I'm only planning on carpeting the whole false floor. When i do this I fully intend to take pics of the whole install procces so maybe I can write up a tutorial for you.

thanks
cormudgen

[Cormudgen]

Actually I was able to find my airpace requirements! But would love an answer to the second part about buliding the box.


"The 12W0 is a potent 12-inch subwoofer designed to extract maximum performance from small to moderate power levels. Highly flexible in its application, this speaker works extremely well in sealed, ported and even bandpass designs.

Nominal Diameter: 12 inches (300 mm)
Continuous Power Handling: 125 Watts
Voice Coil: 1.38" diameter, 6-layer, Kapton former
Available Configurations: 4 ohm or 8 ohm (Single Voice Coil)
Xmax (one-way, linear): 0.34" (8.6 mm)
Sealed Enclosure Range: 1.00-1.75 cu.ft. (28.3-49.5 liters)
Ported Enclosure Range: 1.75-2.75 cu.ft. (49.5-78.0 liters)
VRC™ Technology: YES"

cormudgen